What, if any, tuple in the CIS can be used to setup card controller common memory space bus cycle timings?
I've found several high-speed, solid state CompactFlash cards report 250ns device speed in the device information tuple and yet these same cards actually work at, and are specified at,100ns common memory cycle timing (SanDisk Ultra II 1GB, SanDisk 512MB standard and industrial grade, Lexar media 2GB professional).
It's not practical to hold a data-base of all cards made by all manufacturers, nor does it seem sensible to have to issue an ATA identify device command and try and map the PIO mode to a common memory cycle timing. So what is the recommended way to configure a controller optimally for a given card?
Any pointers greatly appreciated
Tim Clacy